HIRING – Senior Computer Application Support Specialist (CAS) Job Title: Computer Application Support Specialist (CAS) – Senior Client: 4th Canadian Division Signal Squadron Industry: Government / Defense & Military / Information Technology Location: Petawawa, Ontario Work Arrangement: 100% On-site Contract: September 14, 2026 – March 31, 2027 Positions: 2 Language: English Security Clearance: Valid Reliability Clearance – Mandatory We are currently seeking an experienced Senior Computer Application Support Specialist (CAS) to provide on-site service desk, application, systems, account, and technical support for the 4th Canadian Division Signal Squadron. The successful candidate will have strong hands-on experience supporting end users in a networking environment, troubleshooting hardware and software issues, managing user accounts, supporting Active Directory, and working with IT service management/ticketing systems.

Key Responsibilities ~1st line service desk and technical support to end users. ~ Troubleshoot and resolve hardware, software, system, printer, and CPU-related issues. ~ Provide technical support through remote connections when required. ~ Support users in a networking environment and troubleshoot connectivity-related issues. ~ Configure and support network software and ensure compatibility between applications, utilities, hardware, and peripherals. ~ Support commonly used software applications, operating systems, and communication protocols. ~ Assist with system configuration and ensure systems operate efficiently and productively. ~ Provide support for communication features and related technologies. ~ Perform account management activities , including account creation, modification, movement, and transfers. ~ Support and manage user accounts and objects within Active Directory (AD) . ~ Assist with file management and other Active Directory-related activities. ~ Provide technical support for cloud-based applications .



~ Log, update, track, and resolve incidents and service requests using online IT service management/ticketing systems . ~ Diagnose issues, document resolutions, and elevate complex incidents when required. ~ Provide professional customer service and explicit communication to end users.

Requirements Mandatory Skills &

Experience Candidates should have demonstrated experience in: ~ Networking environments ~ Network software configuration and support ~ Operating systems and commonly used software applications ~ Communication protocols and communication features ~ Hardware and peripheral troubleshooting ~ Printer troubleshooting ~ CPU/system troubleshooting ~1st line service desk/help desk support ~ Remote technical support ~ User account creation and modification ~ Account movement/transfer ~ Active Directory ~ File and object management ~ Cloud-based applications ~ IT service management/ticketing systems ~ Strong Asset EITSM Assyst experience will be considered a strong asset and may receive preference.

Security

Clearance – Mandatory Valid Reliability Clearance is mandatory. Candidates must be able to provide proof of their security clearance . The contract start date is subject to the candidate having a valid VCR .

Work Location 4 CDSG Signal Squadron – Service Desk Building S111 101 Menin Drive Petawawa, ON K8H 2X3 This is a 100% on-site position . Candidates must be willing and able to work on-site in Petawawa, Ontario for the full contract duration.

Ideal Candidate The ideal candidate is a senior IT support professional with strong hands-on experience in service desk support, networking, Active Directory, account administration, troubleshooting, cloud applications, and ITSM environments . Candidates who have experience supporting government, military, defense, or enterprise IT environments are encouraged to apply. Only candidates who meet the mandatory requirements and can work 100% on-site in Petawawa will be considered.

📌 Senior Computer Application Support Specialist (CAS) (Petawawa)
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📍 Petawawa